JPS5879094U

JPS5879094U - centrifugal compressor

Info

Publication number: JPS5879094U
Application number: JP17408781U
Authority: JP
Inventors: 泰古谷
Original assignee: 株式会社荏原製作所
Priority date: 1981-11-25
Filing date: 1981-11-25
Publication date: 1983-05-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図、第２図は従来の圧縮機又は送風機の側断面図、
第３図はこの考案のディフューザ翼の説明図、第４図は
ディフューザ翼入口部の速度三角形を示す図、第５図は
ディフューザ翼出口部の速　一度三角形を示す図、第６
図、第７図はこの考案の別実施態様を示す図、第８図は
流量係数と流れ角の関係を示す図である。符号の説明、１・・・吸込管、２・・・羽根車、３・・
・回転軸、４・・・回転ディフューザ、５・・・静止デ
ィフューザ、６・・・渦巻室、７・・・壁、８・・・軸
受、９・・・羽根車翼、１０．１２・・・側板、１１・
・・無負荷翼。Figures 1 and 2 are side sectional views of a conventional compressor or blower;
Figure 3 is an explanatory diagram of the diffuser blade of this invention, Figure 4 is a diagram showing the velocity triangle at the diffuser blade inlet, Figure 5 is a diagram showing the velocity triangle at the diffuser blade outlet, and Figure 6 is a diagram showing the velocity triangle at the diffuser blade outlet.
FIG. 7 is a diagram showing another embodiment of this invention, and FIG. 8 is a diagram showing the relationship between flow coefficient and flow angle. Explanation of symbols, 1... Suction pipe, 2... Impeller, 3...
・Rotating shaft, 4... Rotating diffuser, 5... Stationary diffuser, 6... Vortex chamber, 7... Wall, 8... Bearing, 9... Impeller blade, 10.12...・Side plate, 11・
...No-load wing.

Claims

[Scope of utility model registration request]

(1) A compressor or blower characterized by having a structure in which a rotary diffuser that rotates integrally with an impeller is provided, blades are provided in the rotary diffuser portion, and the absolute speed at the outlet of the impeller is reduced.

(2) The impeller blade is extended into the flow path of the rotating diffuser, and this extended portion has a structure of a no-load blade so that the fluid flow becomes a free vortex flow. A compressor or blower according to claim 1 of the patent registration claim.

(3) The compressor or blower according to claim 2, wherein the unloaded blades are arranged so as to be offset from the extension line of the blades of the impeller.

(4) The above-mentioned no-load blade is an extension of the impeller blade,
The compressor or blower according to claim 1 or 2, characterized in that a slit is provided in the connecting portion of both wings to make them discontinuous.

(5) The compressor or blower according to any one of the claims for the utility model registration, characterized in that the number of the no-load blades and the number of impeller blades are different.